Cambridge IGCSE · 分析与预测
2024 Cambridge IGCSE Sciences - Co-ordinated (Double) (0654) 历年真题分析与预测
An analytical review of the October/November 2024 Cambridge IGCSE Co-ordinated Sciences (0654) exam papers, focusing on Paper 43 (Extended Theory) and highlighting syllabus coverage, practical assessment trends, and typical candidate pitfalls.
更新: 2026年6月13日
分析模拟试题
难度 3.8/5
总分
220
时间
255 分钟
最高频考点
—
分卷
卷二 選擇題 (Extended): 40 分 · 45 分钟Paper 4 Theory (Extended): 120 分 · 120 分钟Paper 6 Alternative to Practical: 60 分 · 90 分钟
考官重点
官方报告整理常见失分点
- In Hooke's Law calculations, failing to calculate the load on a single spring (17000 N / 4 = 4250 N), using the total car weight as the force instead.
- Confusing the reaction mechanisms of addition polymerisation (which forms no side products) with condensation polymerisation (which forms a small molecule such as water).
- Leaving out required negative charges or electron count details when drawing the formula or ion representation for tellurium (Te2-).
常见误区
- Believing that plant cell auxins stimulate cell division rather than causing cell elongation specifically on the shaded side of the shoot.
- Assuming that the limiting reactant is simply the substance with the lowest absolute mass in grams, without converting to moles first.
失分原因
- Failing to write down the correct units (such as 'coulombs' or 'C') when specifically prompted in quantitative physics questions.
- Drawing incomplete or incorrectly orientated arrows to represent activation energy and energy change on chemical profile diagrams.
- Imprecise explanations of gas pressure in terms of molecular collisions, omitting that force is exerted 'per unit area' or 'on the walls of the container'.
等级分数线估算
更新: 2026年6月13日
| 等级 | 分数 | 百分比 |
|---|---|---|
| A* | 171/240 | 71% |
| A | 142/240 | 59% |
| B | 113/240 | 47% |
| C | 85/240 | 35% |
| D | 72/240 | 30% |
| E | 60/240 | 25% |
Official grade boundaries published by Cambridge IGCSE grade thresholds (official).
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